Ultra-short-wave transmitting and receiving device



June 11, 1940, E. WILCKENS 2,203,750

ULTRA-SHORT WAVE TRANSMiTTING AND RECEIVING DEVICE Filed April 23, 1937 INVENTOR t/f/varl lzcxs/m ATTORNEY 5 are often utilised on aircraft or in locations movement into operating condition outside of -5 Patented June 11, 1940 UNITED STATES PATENT OFFICE ULTRA-SHORT-WAVE TRANSMITTING AND RECEIVING DEVICE Ernst Wilckens, Berlin-Sudende, Germany, assignor to Julius Pintsch Kommanditgcsellschaft, Berlin, Germany Application April 23, 1937, Serial No. 138,547 In Germany March 13, 1936 1 Claim. (Cl. 250-33) This invention relates to transmitting and reexterior, but in general, it will sufiice to mainceiving devices for ultra-short-wave radio comtain a tight but slidable contact between the munication. aerial structure and the bushing or equivalent Ultra-short-wave transmitters and receivers used to support such aerial and provide for its wherein the aerial which radiates the energy is the inner chamber. The releasability of the disposed outside the space or chamber containouter elements on the other hand results in the ing the current-generating or controlling depossibility of connecting the replacement memvices and wherein the outside space during the bers in a more simple manner with the eleintended operation of the device is inaccessible. ments located in the inner chamber of the device. 10 Such cases arise for example during journeys in In order to allow passage of the replacement stratosphere balloons, in all-metal aircraft or members through as small openings as possible similar vehicles. If during journeys in such deit is advisable to utilise an aerial device which Vices the aerial isput out of action for example in the condition in which it is ready for replacedue to freezing or by mechanical deformation or ment purposes is of a relatively long narrow l5 destruction, the system may be put transitorily shape and which after being pushed to the outor wholly out of operation. The use of the transside can from the interior be brought into anmitting and receiving arrangement may also be other shape, namely, into that form which is prevented when the aerial loses its value through essential for its radiating properties whilst in the influence of conditions outside its special the former case it was of a form particularly characteristics. favourable for its passage through a long narrow It is one object of this invention to provide a opening. For example aerials of this character transmitting or receiving device for ultra-shortmay be made collapsible in the form of an um.- wave radio communication which is constructed brella and in this form pushed through an open- 5 and arranged so as to overcome the above reing'and when the umbrella part is located outside cited disadvantages. the opening it may be spread apart from the Another object of the invention is to provide interior chamber. an aerial fitting for use in ultra-short-lwave For the abovementioned purposes decimetre radio communication which can be replaced as and centimetre waves should especially be used desired by remote control. in order to maintain the aerial itself of small 0 According to the present invention the ultra dimensions. The aperture through the wall short wave transmitting and receiving device is which for example in balloons would be made constructed in such manner that those elements through the metallic sphere, may also be utilised of the device which are located outside the confor high frequency conduction since the wave trol chamber are readily detachable from the generator will be located in the interior and the 35 remaining elements and are further detachable aerial outside and conduction of energy must take by actuation from within the inner control place between the two. chamber. The beam aerial may be combined with the By this arrangement it becomes possible to energy conductor to form a rigid unit or it can Separate the aerial Which s no longer perative be arranged so as to be movable on the end. of and other externally nged elements from the the energy conductor so that the direction of elements located in the inner chamber and to the beam radiation can be controlled from incast off said elements for example to the eX- side the chamber. An arrangement of this charterior concurrently with the positioning of a reacter can for example be produced by inserting placement device. in the opening through which the replacement 45 As soon as the now useless elements of the members are passedaspherical bushing in which device have been thrown ed the renewal or reis located a ball and socket guide with which the placement device y e positioned from the externally disposed aerial is rigidly connected. inner chamber. It is preferable to maintain the The bushing can readily be detached in known necessary lead out opening as small as possible manner from the opening. so that any influences prevailing outside the In order to produce a favourable directing control chamber cannot act towards the interior action group transmitters and receivers can be thereof. In many cases it may be necessary to arranged externally of the chamber which if construct equalising or lock chambers so as to be constructed so as to be movable provide particable to convey the replacement members to the ularly sharp focussing. 55

The invention is disclosed in the following specification of which the accompanying drawing forms a part, and in which:

Figure l is a diagrammatic cross section through the body of a ship showing a simple form of aerial mounted therein.

Figure 2 is an enlarged partial section of Fig ure 1 showing one method of mounting the aerial.

Figure 3 is a view of an aerial in collapsed form being inserted into place.

Figure 4 is a view of the aerial shown in Figure 3 in its extended form.

Figure 5 illustrates another form of aerial in its operating position, the lower portion of the aerial structure not being shown.

Figure 6 is a section on line EB of Figure 5.

Figure 7 is a detail section of a modified means of mounting an aerial.

Figure 8 is a further modification of mounting an aerial using a form of air look.

In Figure 3., 10 indicates the shell of an airplane or gondola body of an air ship in which radio apparatus ii is located for the sending and receiving of electric impulses through the medium of an aerial 62 located on the exterior of the body Hi, the aerial l2 being connected to the apparatus in the conventional manner such as by a conductor l3. The aerial rod may be mounted in an insulated bushing 54 fixed in the shell 10, the rod being held against displacement by the set screw I5. Desirably, the aerial rod is circular in cross section and arranged to engage the inner wall of the bushing i in tight, but slidable contact. In order to make a replacement of the aerial it is only necessary to loosen the set screw and eject the old aerial by the act of forcing the new one into place. By this means, communication between the inside space of the ship with the outside space is prevented.

In Figures 3 and 4 I have illustrated a different type of aerial wherein I provide a supporting stanchion 20 which may be mounted in operative position in the bushing M in a manner similar to that of Figures 1 and 2. Fivoted as at 2! to the outer end of this stanchion are two arms 22 which may be brought into any suitable angle to the stanchion 20 when in position for use. These arms are arcuate in cross section so that when in collapsed position for inserting into the bushing [4, they fit snugly about the reduced portion 23 of the stanchion 28, the maximum diameter of the assembly allowing for substantially gas-sealing but sliding clearance in the bore of the bushing 14. The stanchion 28 is shown as being hollow to permit for an operating rod 24. To the outer end of said rod 24 are connected two links 25, these links being connected at their other ends to the arms 22.

Thus when the collapsed aerial has been inserted into position in bushing l4 and locked into place by set screw l5, rod 24 is pushed outwardly to extend the arms 22 of the aerial to any desired angle with the line of the stanchion.

This actuating rod may be held in its adjusted position by means of set screw 25'. It is only necessary to remove screw 25' and loosen screw IS in order to eject this aerial for replacement.

In Figures 5 and 6 I have illustrated a further type of aerial wherein 36 represents an aerial carried by two pivoted arms 31 and 32 these arms being pivoted to the stanchion 33, which may act as the reflector in directional radio use. This assemblage provides a parallel movement of the aerial 30 when it is liberated by passing through the bushing l4. Springs 34 are provided to cause this movement and the arms 3| and 32 come to rest in a right angle position relative to the stanchion 33 by reason of their abutment against the upper ends of slots 35 and 36. These slots provide the necessary recesses for the arms 3! and 32 when in their collapsed position. It is to be understood that the lower portion of the stanchion 33 (not shown) has a suitably closed end, to which the lead I3 from a radio apparatus ll may be attached in the manner illustrated in Fig. 1. Such closed end, plus the substantial gassealing contact with the bushing l4 which is inherent in all of the structures herebefore discussed, makes such aerial assembly proof against any substantial amount of infiltration of outer atmosphere into the chamber or loss of the atmosphere of the chamber to the outer atmosphere.

In all of these forms the aerial may be rotated about its vertical axis in directional radio use by loosening the set screw l5 while making his axial adjustment but in Figure 7 I have illustrated a ball and socket means for accomplishing this objective. The ball member 40 may be provided with an arm 4! for imparting this axial motion and suitable calibrations (not shown) may also be provided for indicating gularity.

In Figure 8 I have shown a form of air lock which may be used consisting of a collapsible tube 50 and the lower segment 5! may support the aerial in operating position as shown by dotted lines. As indicated in Fig. 8, the upper end of the lower segment 5| is provided with a socket portion adapted to frictionally engage the central flanged element of the aperture 53 and thus to hold the aerial 54 into operative position while preventing the flow of gas around the surface of contact of the aerial 54 with the lower segment 5|. The full line position shows the manner of sealing the cabin space from outside atmosphere when making an aerial replacement. A slide gate 52 is provided to close the aperture 53 when the collapsible tube 50 and aerial 5d are removed.

What I claim is:

In an ultra-short wave transmitting and receiving system, the combination with an antenna detachably associated with the operative elements of said system, of antenna supporting means arranged to permit slidable passage of said antenna from the interior of a chamber housing operative elements of said system to a desired position externally thereof and arranged to receive an end of a replacement antenna conjointly with said first mentioned antenna, said supporting means including a collapsible tube housing for said antenna, having a collarprovided opening arranged in register with an opening in a Wall of said chamber and an antenna receiving bushing arranged for engagement with said collar to support said bushing internally of said housing when said antenna is in position externally of said chamber, said housing having gate means arranged to substantially seal said housing opening against the influx of outer atmosphere into said chamber when said antenna is fully withdrawn into said chamber.

ERNST WILCKENS. 

